From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262402AbVG0Tmk (ORCPT ); Wed, 27 Jul 2005 15:42:40 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262422AbVG0Tmi (ORCPT ); Wed, 27 Jul 2005 15:42:38 -0400 Received: from highlandsun.propagation.net ([66.221.212.168]:52745 "EHLO highlandsun.propagation.net") by vger.kernel.org with ESMTP id S262392AbVG0Tma (ORCPT ); Wed, 27 Jul 2005 15:42:30 -0400 Message-ID: <42E7E398.7000308@highlandsun.com> Date: Wed, 27 Jul 2005 12:42:16 -0700 From: Howard Chu User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8b2) Gecko/20050621 MIME-Version: 1.0 To: Stephen Hemminger CC: linux-kernel@vger.kernel.org Subject: Re: 2.6.12.3 network slowdown? References: <1122452018.772579.63900@g49g2000cwa.googlegroups.com> <20050727082020.C73AC5F7CA@attila.bofh.it> <42E7497B.5040202@highlandsun.com> <20050727105506.78b82aaa@dxpl.pdx.osdl.net> In-Reply-To: <20050727105506.78b82aaa@dxpl.pdx.osdl.net> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Stephen Hemminger wrote: > On Wed, 27 Jul 2005 01:44:43 -0700 > Howard Chu wrote: >> I just recently compiled the 2.6.12.3 kernel for my x86_64 machine >> (Asus A8V motherboard); was previously running a SuSE-compiled 2.6.8 >> kernel (SuSE 9.2 distro). I'm now seeing extremely slow throughput on >> the onboard Yukon (Marvell) ethernet interface, but only in certain >> conditions. Going back to the 2.6.8 kernel shows no slowdown. > There a couple of possibilities, one is driver differences. SUSE ships > the SysKonnect vendor driver vs the older version in 2.6.12, and the > TCP congestion and TSO code has changed since 2.6.8. Thanks for that tip. The SuSE 2.6.8 kernel had driver version 7.04, the 2.6.12.3 kernel had driver version 6.23. I just downloaded the current driver from www.syskonnect.de (8.23) and installed it and now things are much improved, getting around 6.8MB/sec throughput. -- -- Howard Chu Chief Architect, Symas Corp. http://www.symas.com Director, Highland Sun http://highlandsun.com/hyc OpenLDAP Core Team http://www.openldap.org/project/